Fix array access

Nub.Lang/Nub.Lang/Frontend/Lexing/Lexer.cs

@@ -13,6 +13,8 @@ public class Lexer
         ["if"] = Symbol.If,
         ["else"] = Symbol.Else,
         ["while"] = Symbol.While,
+        ["break"] = Symbol.Break,
+        ["continue"] = Symbol.Continue,
         ["return"] = Symbol.Return,
         ["new"] = Symbol.New,
     };

Nub.Lang/Nub.Lang/Frontend/Lexing/SymbolToken.cs

@@ -16,6 +16,8 @@ public enum Symbol
     If,
     Else,
     While,
+    Break,
+    Continue,
     Semicolon,
     Colon,
     OpenParen,

Nub.Lang/Nub.Lang/Frontend/Parsing/BreakNode.cs

@@ -0,0 +1,3 @@
+namespace Nub.Lang.Frontend.Parsing;
+
+public class BreakNode : StatementNode;

Nub.Lang/Nub.Lang/Frontend/Parsing/ContinueNode.cs

@@ -0,0 +1,3 @@
+namespace Nub.Lang.Frontend.Parsing;
+
+public class ContinueNode : StatementNode;

Nub.Lang/Nub.Lang/Frontend/Parsing/Parser.cs

@@ -178,6 +178,8 @@ public class Parser
                     Symbol.Let => ParseVariableAssignment(),
                     Symbol.If => ParseIf(),
                     Symbol.While => ParseWhile(),
+                    Symbol.Break => ParseBreak(),
+                    Symbol.Continue => ParseContinue(),
                     _ => throw new Exception($"Unexpected symbol {symbol.Symbol}")
                 };
             }
@@ -233,6 +235,18 @@ public class Parser
         return new WhileNode(condition, body);
     }
 
+    private BreakNode ParseBreak()
+    {
+        ExpectSymbol(Symbol.Semicolon);
+        return new BreakNode();
+    }
+
+    private ContinueNode ParseContinue()
+    {
+        ExpectSymbol(Symbol.Semicolon);
+        return new ContinueNode();
+    }
+    
     private ExpressionNode ParseExpression(int precedence = 0)
     {
         var left = ParsePrimaryExpression();

Nub.Lang/Nub.Lang/Frontend/Typing/ExpressionTyper.cs

@@ -86,6 +86,9 @@ public class ExpressionTyper
             case ArrayIndexAssignmentNode arrayIndexAssignment:
                 PopulateArrayIndexAssignment(arrayIndexAssignment);
                 break;
+            case BreakNode:
+            case ContinueNode:
+                break;
             case FuncCallStatementNode funcCall:
                 PopulateFuncCallStatement(funcCall);
                 break;